On Thu, 08 Sep 2011 22:32:22 +0200, Hans de Goede wrote: > Now back to the problem, which is: > [ 216.012580] f71882fg f71882fg.656: Invalid (reserved) pwm settings: 0x01 > > Reading the data sheet, this means that the pwm settings for > fan 2 and 3 are: 00 and 00, where as fan 1 has 01. The data sheet gives > the following table for these: > > 00: Reserved > 01: Auto fan speed control, fan speed will follow different temperature by > different duty cycle (voltage) that define in 0xB6-0xBE. > 10: Reserved > 11: Manual mode fan control, user can write expect duty cycle (PWM fan > type) or voltage(linear fan type) to 0xC3, and F71883FG will output this > value duty or voltage to control fan speed. > > Never mind the F71883FG in there, this really if from the F71862FG datasheet > (copy paste error in the data sheet), see: > http://www.fintek.com.tw/eng/products.asp?BID=1&SID=17 > > So the driver bails because something, likely the BIOS on your board has > written an illegal value to the Fan mode Select Register. > > I guess the BIOS only setups fan 1 and the *cough* brilliant *cough* BIOS > developers decided to just write 00 as value for the other fans, sigh. > > There are really 2 things we can do here: > 1) Overwrite the BIOS settings, tricky, could do this with a module option > 2) Instead of not binding the driver at all, allow the driver initialization > to continue normally, but don't register the pwm interface. This requires > some thinking wrt modifying the code a bit though. > > 1 is a really bad idea IMHO, so I'll think a bit about doing 2. And of course option 0, to start with, is to check for a BIOS update for the board in question, and report to the vendor if no BIOS fix is available yet. -- Jean Delvare _______________________________________________ lm-sensors mailing list lm-sensors@xxxxxxxxxxxxxx http://lists.lm-sensors.org/mailman/listinfo/lm-sensors
